19493199047 has 8 divisors (see below), whose sum is σ = 22279919136. Its totient is φ = 16706973312.

The previous prime is 19493199013. The next prime is 19493199049. The reversal of 19493199047 is 74099139491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19493199047 - 2²⁶ = 19426090183 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19493198983 and 19493199001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19493199049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34838 + ... + 200499.

It is an arithmetic number, because the mean of its divisors is an integer number (2784989892).

Almost surely, 2^19493199047 is an apocalyptic number.

19493199047 is a deficient number, since it is larger than the sum of its proper divisors (2786720089).

19493199047 is a wasteful number, since it uses less digits than its factorization.

19493199047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247177.

The product of its (nonzero) digits is 2204496, while the sum is 56.

The spelling of 19493199047 in words is "nineteen billion, four hundred ninety-three million, one hundred ninety-nine thousand, forty-seven".